Genetics - Multiple Alleles

Multiple Alleles

• genes can have more than two alleles - multiple alleles

• ABO blood group associated with 3 alleles with gene I, leading to production of different antigens on the surface of membranes of Red Blood Cells (RBC's)

• IᴬIᴬ / IᴬIᴼ  = antigen A
• IᴮIᴮ/ IᴮIᴼ = antigen B
• IᴬIᴮ = antigen AB
• IᴼIᴼ= no production of either antigen

• only 2 alleles can…